diff --git a/drivers/clk/clk_stm32f.c b/drivers/clk/clk_stm32f.c
index 8d0f9d4..06827fe 100644
--- a/drivers/clk/clk_stm32f.c
+++ b/drivers/clk/clk_stm32f.c
@@ -59,7 +59,7 @@
 #define RCC_PLLCFGR_PLLSAIP_MASK	GENMASK(17, 16)
 #define RCC_PLLSAICFGR_PLLSAIN_SHIFT	6
 #define RCC_PLLSAICFGR_PLLSAIP_SHIFT	16
-#define RCC_PLLSAICFGR_PLLSAIP_4	BIT(17)
+#define RCC_PLLSAICFGR_PLLSAIP_4	BIT(16)
 #define RCC_PLLSAICFGR_PLLSAIQ_4	BIT(26)
 #define RCC_PLLSAICFGR_PLLSAIR_2	BIT(29)